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27” LCD TV       

                                                                     

                   

Hyundai HLCD-A27W4 

 

Service                                                                                                             

Service

 

Service

 

 

                                                                                                                                           

                                                                                                                                                                                   

                                                 

                                                 

                                             

                                                                                                                                                                                         

                                                                                         

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SAFETY NOTICE

 

  ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE 

CHASSIS AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING 

ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGE 

                                                                                                                                                   

Table Of Contents.......……..............................…........1

Revision List.…........................................……......2 

Important Safety Notice.……..................……......3

1.General Specifications..............................………........4  

2.Operating Instructions………..…………………….......6

2.1.The Use of Remote Control…................……...........6

2.2.To Use the Menu………..............................…...........7

2.3.LCD TV Description…….…..............……...............14

2.4.Interface Connector……............................…...........14

3.Precautions and Notices…............……………............15

3.1.Assembly Precaution…............………….................15

3.2.Operating Precaution…………...........................15

3.3.Storage Precaution…......………………..................15

3.4.High Voltage Warning.…..........…………................15

4.Input/Output Description……..…………… ...........16

4.1.D-SUB Connector……...…………………....….......16

4.2.Factory Preset Display Modes……………..….......17

5.Front Panel Control Knobs…....................................17

6.Repair Flow Chart…….............................................18

7.Mechanical Instructions……………................24

8.PCB Layout..………….......................................28

8.1.Main Board……….....…….................................28

8.2.Power Board…...………...................................31

8.3.DC-DC Board…………........................................34

8.4.IR Board……………….......................................34

8.5.Key Board………………......................................35

8.6.Headphone Board………..................................35

9.Block Diagram………………..............................36

10.Schematic Diagram………………...............…37

10.1.Main Board.............................................37

10.2.Power Board....……....................................51

11.Exploded View………..….......................................53

12.BOM List………………………………….............54

CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING 

All manuals and user guides at all-guides.com

all-guides.com

Summary of Contents for HLCD-A27W4

Page 1: ...4 Interface Connector 14 3 Precautions and Notices 15 3 1 Assembly Precaution 15 3 2 Operating Precaution 15 3 3 Storage Precaution 15 3 4 High Voltage Warning 15 4 Input Output Description 16 4 1 D...

Page 2: ...27 LCD TV Hyundai HLCD A27W4 Revision List Revision Date Revision History TPV Model A00 Oct 10 06 First Version Release E276MSNSD2H4NP All manuals and user guides at all guides com...

Page 3: ...shock fire or other hazards Under no circumstances should the original design be modified or altered without written permission from AOC AOC assumes no liability express or implied arising out of any...

Page 4: ...27 LCD TV Hyundai HLCD A27W4 1 General Specifications All manuals and user guides at all guides com...

Page 5: ...27 LCD TV Hyundai HLCD A27W4 All manuals and user guides at all guides com...

Page 6: ...27 LCD TV Hyundai HLCD A27W4 2 Operating Instructions 2 1 The Use Of Remote Control All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 7: ...27 LCD TV Hyundai HLCD A27W4 2 2 To Use The Menus All manuals and user guides at all guides com...

Page 8: ...27 LCD TV Hyundai HLCD A27W4 All manuals and user guides at all guides com...

Page 9: ...27 LCD TV Hyundai HLCD A27W4 All manuals and user guides at all guides com...

Page 10: ...27 LCD TV Hyundai HLCD A27W4 All manuals and user guides at all guides com...

Page 11: ...27 LCD TV Hyundai HLCD A27W4 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 12: ...27 LCD TV Hyundai HLCD A27W4 All manuals and user guides at all guides com...

Page 13: ...27 LCD TV Hyundai HLCD A27W4 All manuals and user guides at all guides com...

Page 14: ...gnals into LCD Module to drive the LCD display circuit The inverter board will drive the five CCFLs Cold Cathode Fluorescent Tube The switching power board will provides the power ON OFF to control th...

Page 15: ...2 Please do not change variable resistance settings in MAIN BOARD they are adjusted to the most suitable value If they are changed it might happen LUMINANCE does not satisfy the white balance spec 3...

Page 16: ...on is as follow 1 6 11 15 5 10 15 Pin Color Display Signal Cable Pin No Description Pin No Description 1 Red Video 9 5V 2 Green Video 10 Sync Ground 3 Blue Video 11 Ground 4 Ground 12 Serial Data for...

Page 17: ...640x480 75Hz 1280 x 768 1024 x 768 N A No VESA 800x600 60Hz 1280 x 768 1024 x 768 N A No VESA 800x600 72Hz 1280 x 768 1024 x 768 N A No VESA 800x600 75Hz 1280 x 768 1024 x 768 N A No VESA 1024x768 60...

Page 18: ...F901 or BD901 or D910 or D902 OK Check IC981 D928 12V Check IC901 Q901 NG Replace IC981or D928 Check Q924 IC924 ON OFF signal NG Replace Q924 or IC924 OK OK Check T951 OK NG Replace T951 Replace IC90...

Page 19: ...0 OK NG Check PWR_ON signal OK NG Check Q700 Q701 Q702 Q703 NG Replace Q700 or Q701 or Q702 or Q703 Check U300 U501 NG Replace U300 U501 Check I2 C communication OK Check PFC circuit NG Replace IC901...

Page 20: ...ource OK Reset source NG Check LVDS cable NG Reset LVDS cable OK Check 24V power supply NG Return to 5 1 OK Check main board power supply OK Check U300 NG Replace U300 OK Check I2 C communication OK C...

Page 21: ...NG Replace the filter or inductance OK NG RF signal Check TV system setup OK Check Tuner Replace Tuner AV1 AV2 signal Check U102 NG Replace U102 PC signal and COMP_YPbPr Check U103 NG Replace U103 OK...

Page 22: ...heck TV system setup OK Check Tuner Replace Tuner AV Component DVD signal Check Audio decoder MSP3425G U601 NG Replace U601 OK Check U600 U603 NG Replace U600 or U603 OK Check Amplifier TDA7266D U602...

Page 23: ...table or not working Is Key Pad Board connecting normally Connect Key Pad Board Is Button Switch normally Replace Button Switch Y Is Key Pad Board Normally Replace Key Pad Board Check Main Board N N Y...

Page 24: ...tion Lay the LCD TV on a flat soft and clean surface Remove the base and stand Remove the hinge cover and the screws on the stand to remove the base and stand Remove the back cover Remove the ten scre...

Page 25: ...27 LCD TV Hyundai HLCD A27W4 Remove the BKT Connector Remove the shield 1 Remove the six screws 2 Push the shield as the arrowhead direction All manuals and user guides at all guides com...

Page 26: ...rd 2 Remove the four screws marked in red and four connectors to remove the main board Remove The Earphone Board and the speakers Remove the screws and connector to remove the earphone board and the s...

Page 27: ...undai HLCD A27W4 Remove the screws and the connector to remove IR board Remove the IR board and the main frame remove the screws to remove the main frame The end N A All manuals and user guides at all...

Page 28: ...27 LCD TV Hyundai HLCD A27W4 8 PCB Layout 8 1 Main Board 715T1641 2 All manuals and user guides at all guides com...

Page 29: ...27 LCD TV Hyundai HLCD A27W4 All manuals and user guides at all guides com...

Page 30: ...27 LCD TV Hyundai HLCD A27W4 All manuals and user guides at all guides com...

Page 31: ...27 LCD TV Hyundai HLCD A27W4 8 2 Power Board 715T1180 3 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 32: ...27 LCD TV Hyundai HLCD A27W4 All manuals and user guides at all guides com...

Page 33: ...27 LCD TV Hyundai HLCD A27W4 All manuals and user guides at all guides com...

Page 34: ...27 LCD TV Hyundai HLCD A27W4 8 3 Tuner Board 715T1278 4 8 4 IR Board 715T1975 1 SM All manuals and user guides at all guides com...

Page 35: ...27 LCD TV Hyundai HLCD A27W4 8 5 Key Board 715T1623 1 8 6 Headphone Board 715T1290 3 All manuals and user guides at all guides com...

Page 36: ...IR Key PAD SPV30 Sca OS MC ANT DRAM VIDEO 1 VIDEO 2 CVBS S VIDEO AD9883AKSTZ ADC U501 PC D SUB MSP3425G AVDIO decoder A 7 U H AC 110 74HC4052D PT2308S EAR AMP U603 SRS M62438 U600 NJM2244 U102 TV PC A...

Page 37: ...2 3 4 5 6 7 8 CP105 22pF 1 2 3 4 5 6 7 8 R7 I_DVD_Y C138 100pF AGND R5 AV1_L 2 0 O 5 C139 100pF C170 NC 0 1uF LINE_O_R 11 INTER C159 68pF CN101 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22...

Page 38: ...75 1 16W AV2_R 1 R108 75 1 16W CH_SEL2 6 Y C121 0 1uF L148 120 OHM Gi C147 470pF R111 75 1 16W 5V 5VP C177 NC 100pF R115 75 1 16W 1 Pb C124 10uF 16V COMP_Pr 1 C114 0 22uF R136 0 1 16W NC Y C164 0 1uF...

Page 39: ...Vict A4 Tuesday June 1 Title Size Document Numb Date C106 0 1uF L106 600 OHM SDA 4 5 6 9 11 14 15 R103 8 2 3W L105 NC R10 0 1 10W AGND R107 220 1 16W R106 75 1 16W L147 0 1 16W R105 NC R1 0 1 10W AGN...

Page 40: ...VIN2 With Comb Filter 3D_Y Without Comb Filter CVBS CC_R 14 C239 0 1uF C225 330pF R210 75 1 16W VDDA R227 75 1 16W R224 75 1 16W C233 0 1uF R217 100 1 16W U200 VPC3230D 1 2 3 4 5 6 7 16 15 18 11 20 1...

Page 41: ...30 31 32 33 34 22 35 2 4 5 7 21 20 16 19 1 14 27 3 9 43 49 6 12 46 52 8 10 11 13 42 44 45 47 48 50 51 53 15 36 RAS CAS GND GND CLK CKE DQMU GND A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 DQ0 DQ1 DQ2 DQ3 B...

Page 42: ...27 28 29 30 31 32 33 34 35 36 37 38 39 40 TP310 TP COAST 9 B6 RSET GOUT3 VFIELD R4 D301 NC MLL4148 0 R331 NC R365 100K 1 16W 0 W_ENABLE 1 VHREF R313 1K 1 16W TGOUT VHS D300 MLL4148 R306 1 5K 1 16W L31...

Page 43: ...4 DVSS25_TB15 DVSS25_TB16 DVSS25_TB17 DVSS25_TB18 DVSS25_TB19 DVSS33_TB13 DVSS25_TB20 DVSS33_1 DVSS33_2 DVSS33_3 DVSS33_4 DVSS33_5 DVSS33_6 DVSS33_7 DVDD25_1 DVDD25_2 DVDD25_3 DVDD25_4 DVDD25_5 DVDD25...

Page 44: ...1uF VGA_R 2 ZD503 MLL752A 3 3V_AD C508 0 47uF 50V 3 3V_AD C502 0 1uF AGND AGND VGA_B 2 VSEL_G 2 VGA_SCL C535 0 1uF C532 0 1uF Near IC VSEL_B 2 C529 0 1uF D502 BAV99 3 1 2 TX GREEN C533 0 1uF TX 5 5VD...

Page 45: ...0 1uF PC_R 11 C654 0 1uF R653 0 1 10W L612 C643 2 2uF 16V L615 600 OHM PRE_R R650 2 2 3W R628 1K 1 16W R637 1K 1 16W R646 NC R616 100K 1 16W L614 SRS_CTL 6 L611 C656 0 001uF C650 2 2 uF R627 3 9K 1 16...

Page 46: ...R_CL DVSUP DVSS I2S_DA_IN2 NC NC NC RESETQ NC NC VREF2 DACM_R DACM_L NC NC NC NC NC VREF1 SC1_OUT_R SC1_OUT_L NC AHVSUP CAPL_M AHVSS AGNDC NC NC NC NC NC ASG SC2_IN_L SC2_IN_R ASG SC1_IN_L SC1_IN_R VR...

Page 47: ...1 16W 12V_A C722 0 1uF R C717 47uF 16V Q700 AO3401 AOC Top A4 Tuesd Title Size Docum Date 3 3VM C725 0 1uF 5V C709 0 1uF R706 620 1 8W R702 22K 1 16W 2 5V F 5VP AGND AGND 2 5V C700 0 1uF R C705 0 1uF...

Page 48: ...3 TXIN24 TXIN25 TXIN26 TXIN27 TXOUT0 TXOUT1 TXOUT2 TXOUT3 TXCOUT TXOUT0 TXOUT1 TXOUT2 TXOUT3 TXCOUT CLKIN PWRDN VCC VC C 1 VC C 2 VC C 3 PVC C OVC C GN D 1 GN D 2 GN D 3 GN D 4 GN D 5 PGN D 1 PGN D 2...

Page 49: ...EO CSYNC LPF R413 100 1 16W C41 47PF 13 C A Tuesday June 13 Title Size Document Number Date C412 47PF 5V VD_HS 4 6 R406 470 1 16W R414 100 1 16W C405 0 1uF R408 6 8K 1 16W R405 22K 1 16W C415 10uF 16V...

Page 50: ...37AK R910 47K 1 16W R942 470 1 16W 3D_Y 4 L909 600 OHM R921 220 1 16W R949 27K 1 16W A25 A25 Q907 2SC2412K AGND Q912 2SC2412K FL900 EMI FILTER 1 2 3 4 6 5V R933 1K 1 16W R930 47 1 16W C932 0 1uF 16V R...

Page 51: ...27 LCD TV 51 10 2 Power Board 715T1180 3 All manuals and user guides at all guides com a l l g u i d e s c o m...

Page 52: ...27 LCD TV 52 All manuals and user guides at all guides com...

Page 53: ...27 LCD TV 53 11 Exploded View All manuals and user guides at all guides com...

Page 54: ...ADHESIVE TYPE 052T6020 9 PROTECT FILM 052T6025 15128 MYLAR 085T 583501504 GASKET 085T 690 2 MAIN SHIELD 089T 173 56 4B AUDIO CABLE 089T 725GAA600 SIGNAL CABLE 089T408A15N IS POWER CORD Wall out for I...

Page 55: ...Q34T1860 RG 1L STAND Q34T1861 RG 1L 20 BASE Q40T 270955 1A Rating label Q40T 58161555B Rating label Q40T 58161556B Rating label Q44T2702970 1A Carton Q44TF003 1 EPS Q44TF003 2 EPS Q44TF003 5 1A U tape...

Page 56: ...C905 063T213J105GFA MPF CAP C926 064T400K473 57 MPF CAP C942 065T 1K222 2A6213 0 0022UF 1KV C922 065T 1K222 2A6213 0 0022UF 1KV C921 065T 1M103 3T6921 0 01uf 20 1000V Y5V C903 065T306M1022BM Y1 CAP 0...

Page 57: ...KE COIL L953 073L 174 46 LG FILTER L953 073L 174 46LSG FILTER L952 073L 174 47 LG CHOKE COIL L952 073L 174 47LSG LINE FILTER L903 073L 174 48 LG LINE FILTER L904 073L 174 49 LG LINE FILTER L904 073L 1...

Page 58: ...AL OXIDE MINI R650 061T153M229 59 2 2 OHM 5 3W R649 061T153M229 59 2 2 OHM 5 3W R644 061T153M229 59 2 2 OHM 5 3W R643 061T153M229 59 2 2 OHM 5 3W R103 061T153M829 59 8 2 OHM 3W MOF R102 061T153M829 59...

Page 59: ...2128 CR3 SCREW 005T 42 1 CUSHION 012T 372 1 MICA Q943 057T 600 42 IRFB38N20D TO 220AB Q942 057T 600 42 IRFB38N20D TO 220AB 090T 428 1 HEAT SINK D927 093T 60247 DIODE FME 220A TO 220 SANKEN D928 093T 6...

Page 60: ...932 061T0805393 RST CHIPR 39 KOHM 5 1 8W R904 061T0805470 RST CHIPR 47 OHM 5 1 8W R933 061T0805471 RST CHIPR 470 OHM 5 1 8W R935 061T0805472 RST CHIPR 4 7 KOHM 5 1 8W R953 061T0805563 RST CHIPR 56 KOH...

Page 61: ...1U 50V X7R C935 065T0805104 32 CHIP 0 1U 50V X7R C924 065T0805104 32 CHIP 0 1U 50V X7R C920 065T0805104 32 CHIP 0 1U 50V X7R C914 065T0805104 32 CHIP 0 1U 50V X7R C910 065T0805104 32 CHIP 0 1U 50V X7...

Page 62: ...0913Z H PIN HEADER 1 13 R A C807 067T215B471 3N 105 470UF M 16V NCC C806 067T215B471 3N 105 470UF M 16V NCC C807 067T215B471 3R LOW E S R 470UF 20 16V C806 067T215B471 3R LOW E S R 470UF 20 16V C801 0...

Page 63: ...16W RP502 061T 125101 8 RST CHIP AR 8P4R 100 OHM 5 1 16W RP503 061T 125101 8 RST CHIP AR 8P4R 100 OHM 5 1 16W RP504 061T 125101 8 RST CHIP AR 8P4R 100 OHM 5 1 16W RP505 061T 125101 8 RST CHIP AR 8P4R...

Page 64: ...603000 CHIP 0OHM 1 16W R608 061T0603000 CHIP 0OHM 1 16W R648 061T0603000 CHIP 0OHM 1 16W R800 061T0603000 CHIP 0OHM 1 16W L504 061T0603000 CHIP 0OHM 1 16W L128 061T0603000 CHIP 0OHM 1 16W L123 061T060...

Page 65: ...102 CHIP 1K OHM 1 16W R313 061T0603102 CHIP 1K OHM 1 16W R220 061T0603102 CHIP 1K OHM 1 16W R219 061T0603102 CHIP 1K OHM 1 16W R218 061T0603102 CHIP 1K OHM 1 16W R213 061T0603102 CHIP 1K OHM 1 16W R61...

Page 66: ...100K OHM 1 16W R366 061T0603104 CHIP 100K OHM 1 16W R367 061T0603104 CHIP 100K OHM 1 16W R616 061T0603104 CHIP 100K OHM 1 16W R205 061T0603105 CHIP 1MOHM 1 16W R334 061T0603105 CHIP 1MOHM 1 16W R700...

Page 67: ...PR 470OHM 5 1 10W R404 061T0603471 RST CHIPR 470OHM 5 1 10W R403 061T0603471 RST CHIPR 470OHM 5 1 10W R322 061T0603472 CHIP 4 7KOHM 1 16W R349 061T0603472 CHIP 4 7KOHM 1 16W R350 061T0603472 CHIP 4 7K...

Page 68: ...5 1 10W L506 061T0805000 CHIP 0OHM 5 1 10W R716 061T0805000 CHIP 0OHM 5 1 10W R715 061T0805000 CHIP 0OHM 5 1 10W R714 061T0805000 CHIP 0OHM 5 1 10W R712 061T0805000 CHIP 0OHM 5 1 10W R711 061T0805000...

Page 69: ...K 16V X7R C502 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C509 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C514 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C515 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C516 0...

Page 70: ...C722 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C718 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C716 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C714 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C712 065T0603104...

Page 71: ...3104 12 MLCC 0603 0 1UF K 16V X7R C109 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C121 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C136 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C145 065T0603104 12 MLCC 060...

Page 72: ...5T0603104 12 MLCC 0603 0 1UF K 16V X7R C329 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C367 065T0603150 31 CHIP 15PF 50V NPO C368 065T0603150 31 CHIP 15PF 50V NPO C369 065T0603150 31 CHIP 15PF 50V NPO C...

Page 73: ...0PF 50V X7R C391 065T0603331 32 CHIP 330PF 50V X7R C226 065T0603331 32 CHIP 330PF 50V X7R C225 065T0603331 32 CHIP 330PF 50V X7R C224 065T0603331 32 CHIP 330PF 50V X7R C201 065T0603339 31 CHIP 3 3PF 5...

Page 74: ...V X7R C208 065T0805684 17 CHIP 0 68UF 16V Y5V C206 065T0805684 17 CHIP 0 68UF 16V Y5V C205 065T0805684 17 CHIP 0 68UF 16V Y5V CP100 065T600M102 8T CHIP APRAY 1000PF 8P CP600 065T600M102 8T CHIP APRAY...

Page 75: ...121003XT EC 85 CHIP 10UF M 16V C348 067T 4121003XT EC 85 CHIP 10UF M 16V C347 067T 4121003XT EC 85 CHIP 10UF M 16V C331 067T 4121003XT EC 85 CHIP 10UF M 16V C330 067T 4121003XT EC 85 CHIP 10UF M 16V C...

Page 76: ...6V C115 067T 4121003XT EC 85 CHIP 10UF M 16V C116 067T 4121003XT EC 85 CHIP 10UF M 16V C117 067T 4121003XT EC 85 CHIP 10UF M 16V C118 067T 4121003XT EC 85 CHIP 10UF M 16V C119 067T 4121003XT EC 85 CHI...

Page 77: ...00 OHM 0805 L613 071T 56G301 EA CHIP BEAD 300 OHM 0805 L614 071T 56G301 EA CHIP BEAD 300 OHM 0805 L302 071T 56U601 BEAD 600 OHM L301 071T 56U601 BEAD 600 OHM L208 071T 56U601 BEAD 600 OHM L207 071T 56...

Page 78: ...0 087T 202 32 IC SOCKET PLCC 32P U310 087T 202 32 NY IC SOCKET 32PIN PLCC ZD503 093T 39139 CHIP ZD 5 6V MLL752A 10 1 2W ZD500 093T 39139 CHIP ZD 5 6V MLL752A 10 1 2W ZD501 093T 39139 CHIP ZD 5 6V MLL7...

Page 79: ...ST CHIPR 330 OHM 5 1 4W C3 065T0603101 31 CHIP 100PF 50V NPO C5 065T0603104 32 CHIP 0 1UF 50V X7R C4 065T0603104 32 CHIP 0 1UF 50V X7R C2 065T0603104 32 CHIP 0 1UF 50V X7R C1 065T0805475 A5 CHIP 4 7UF...

Page 80: ...CC 5 11MM C957 067T 2151007NT 10UF 50V NCC 5 11MM C909 067T 2151007RT LOW E S R 10UF 20 50V C923 067T 2151007RT LOW E S R 10UF 20 50V C957 067T 2151007RT LOW E S R 10UF 20 50V C925 067T 2154707NT 47UF...

Page 81: ...095T 90 23 TIN COATED J907 095T 90 23 TIN COATED J908 095T 90 23 TIN COATED 715T1180 3 POWER BOARD PCB IC801 056T 133 32 NS LM3485 Q801 057T 763 3 AO4411L SO 8 BY AOS SMT Q801 057T 763 4 RSS050P03 R8...

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